This floral scent makes people feel uncomfortable and a little disgusting, but it still doesn't reach the level of Gavinrou's constant vomiting.

What exactly made everyone in the Gai Mansion vomit? Xu Yuntian thought about it and felt that the vomiting of Gai Mansion must have something to do with the fragrance of the flower.

Suddenly Xu Yuntian thought that something must have been combined with the fragrance of the flower, which strengthened the effect of the fragrance of the flower, which aggravated the vomiting effect and caused everyone in the Gaifu to vomit continuously.

"What is it that everyone in the Gai Mansion must eat?" Xu Yuntian said to himself.

Seeing the water in the pool, he quickly thought that everyone in the Gai Mansion must eat the same thing, that is water! Everyone needs to drink water! No one can do without anyone else, there must be problems in the water!

"Let's go to the kitchen!" Xu Yuntian said to Gao Yasi.

The kitchen of Gaifu is located in the southwest of Gaifu. The kitchen is large and larger than the average dining kitchen. There is no one in the kitchen and it emits a smell of oil smoke.

Xu Yuntian glanced at the kitchen and quickly found the kitchen reservoir. This was a rectangular reservoir, about three meters long and two meters wide. The water inside the reservoir was about one meter deep.

Xu Yuntian leaned down and smelled the water surface. He smelled a faint fragrance. Then he picked up the scoop of water, scooped a scoop of water, and carefully checked the color of the water.

Gao Yasi stood beside Xu Yuntian. She saw Xu Yuntian staring at the water in the scoop. She stared at the water in the scoop. The water in the scoop was very clear and she saw nothing.

"Is there any problem with this water?" Gao Yasi said inexplicably.

Xu Yuntian nodded and said, "There is something wrong with this water. Someone put something in the water. After drinking this water, it will combine with the fragrance of flowers emitted in the pool, and it will make people vomit."

"Ah! Someone put something in the water! What did it put? Who did it?" Gao Yasi said in surprise.

Xu Yuntian shook his head and said, "I need to test it before I know what is placed in the water. I don't know who made it yet."

As he said that, Xu Yuntian took out a piece of paper and pen, wrote some things on the paper, and said to Gao Yasi: "You buy these things according to the order issued above."

Gao Yasi took the paper and saw more than a dozen things written on it. Some of them were chemical instruments and chemical reagents, but some of them were not known and they didn’t know what it was.

"Okay, I'll configure these things for you right away." Gao Yasi nodded.

After Gao Yasi left, Xu Yuntian left the kitchen. He walked towards the west wing and arrived at the door of the west wing and found that the door of the west wing was closed.

I approached the door and listened to it, but I didn't hear anything. I was sure that there was no one in the west wing. It seemed that the four-person group of the stolen sky and exchanged for the sun had not arrived yet.

Xu Yuntian walked to the living room of Gai Mansion and saw the cleaner sweeping the floor. He was slightly stunned, "Hey! Why is the cleaner still sweeping the floor here? Didn't she vomit?" Xu Yuntian said in surprise.

He walked towards the cleaner, "Auntie, why haven't you vomited?" Xu Yuntian said with a smile.

The cleaner ignored him and continued to sweep the floor, as if he didn't hear it.

"Auntie!" Xu Yuntian shouted.

The cleaner was still sweeping the floor. Xu Yuntian frowned slightly. When he was about to shout loudly, a security guard said to Xu Yuntian: "Stop shouting, she is deaf and dumb, and she can't even hear her screaming."

Xu Yuntian was shocked, turned his head to look at the security guard and said, "This cleaner is a deaf and mute!"

The security guard nodded and said, "Yes, Aunt Qian has worked in Gai Mansion for more than 20 years. It is said that she is born to be deaf and mute, and she can't hear anything when she is born."

Xu Yuntian glanced at Aunt Qian, a cleaning worker, and then said to the security guard: "Why didn't Aunt Qian vomit?"

"I heard that Aunt Qian never eats breakfast, so she didn't vomit." The security guard said.

Xu Yuntian was slightly stunned. He knew that some people had the habit of not eating breakfast and only ate two meals a day, but Aunt Qian did not eat breakfast. Doesn’t she drink water?

Xu Yuntian walked up to Aunt Qian and gestured to her. He used the sign language of a deaf and mute person and said he would disturb her and ask her some questions.

Aunt Qian stopped sweeping the floor. She looked at Xu Yuntian and gestured. The sign language means: "Okay, what's the problem?"

Xu Yuntian continued to speak sign language and asked, "So many people in the Gai Mansion have vomited and been hospitalized, why don't you vomit?"

Aunt Qian grinned, revealing her brown teeth. She said in sign language: "I never eat breakfast in the morning. They vomited continuously after eating breakfast. I suspect that the breakfast was poisoned."

Xu Yuntian called sign language: "Did you not drink water in the morning?"

Aunt Qian said in sign language: "I have water in the morning."

Xu Yuntian frowned slightly and said in a sign language: "You have drunk water, why haven't you vomited?"

Aunt Qian grinned and said in sign language: "I drank mineral water in the morning. Fortunately, I didn't drink kitchen water, otherwise I would be poisoned."

"Uh,! It turns out that Aunt Qian is drinking mineral water! No wonder she didn't vomit!" Xu Yuntian suddenly realized and said.

Then he waved his hand to Aunt Qian, made a sign language and said, "Thank you, it's okay, you can continue to sweep the floor."

He just carefully observed Aunt Qian's pupils. Her pupils did not dilate, and he initially concluded that she was probably not lying.

Aunt Qian continued to sweep the floor, and Xu Yuntian went to the living room of Gai Mansion to wait for Gao Yasi. After waiting for about half an hour, Gao Yasi came back and the porter moved in a carton and placed it on the ground.

"Xu Yuntian, you have everything you want!" Gao Yasi pointed at Xu Yuntiandao.

Xu Yuntian nodded, and he opened the cardboard box, placed the glassware inside on the table, and handed it to Gao Yasi with a measuring cup and said, "You go to the kitchen reservoir to fill two hundred milliliters of water."

Gao Yasi took the measuring cup and went to the kitchen to fill water. Xu Yuntian placed the chemical instruments. After the arrangement was made, Gao Yasi came with the measuring cup containing water.

"The water is ready!" Gao Yasi handed the measuring cup to Xu Yuntian.

Xu Yuntian took the measuring cup, poured 100 ml of water into a small beaker, then took the straw and sucked the colorless liquid in a small bottle and dripped it into the small beaker.

Then Xu Yuntian grabbed the small beaker and shook it. After a moment, the water in the small beaker turned red, "Oh! This water is alkaline!" Xu Yuntian said.

Then Xu Yuntian continued to drop chemical reagents into the small beaker, then ignited the alcohol lamp, and placed the small beaker on the combustion rack to heat it.

Gao Yasi had excellent chemistry scores when she was there, but she couldn't understand what Xu Yuntian was doing.

Xu Yuntian heated again, dripped in reagents, filtered, and distilled. After more than half an hour, the water in the small beaker was evaporated to dry.

A little blue powder was left at the bottom of the small beaker bottle. Xu Yuntian took out a spoon and scraped off the blue powder on a piece of white paper. He twisted the blue powder with his fingers and placed it in front of his nose to smell it.

Xu Yuntian immediately knew what this blue powder was. This is an alkaline substance extracted from plants, called Shaq, and is a strong catalyst.
Chapter completed!